------------[ cut here ]------------
WARNING: CPU: 2 PID: 8526 at arch/x86/kvm/x86.c:11099 kvm_arch_vcpu_ioctl_run+0x2379/0x2820 arch/x86/kvm/x86.c:11099
Modules linked in:
CPU: 2 PID: 8526 Comm: syz-executor.0 Not tainted 6.4.0-rc5-syzkaller-00016-ga4d7d7011219 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014
RIP: 0010:kvm_arch_vcpu_ioctl_run+0x2379/0x2820 arch/x86/kvm/x86.c:11099
Code: fc ff ff e8 79 63 71 00 44 89 e6 48 c7 c7 40 8a 42 8a c6 05 8b e1 51 0d 01 e8 43 1f 39 00 0f 0b e9 2a fc ff ff e8 57 63 71 00 <0f> 0b e9 26 fb ff ff e8 4b 63 71 00 0f b6 1d 68 e1 51 0d 31 ff 89
RSP: 0018:ffffc90023f3fbd0 EFLAGS: 00010212
RAX: 0000000000000f71 RBX: 0000000000000001 RCX: ffffc900063f1000
RDX: 0000000000040000 RSI: ffffffff8112e2e9 RDI: 0000000000000001
RBP: ffff8880744ea8c0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: ffffc9002428a918
R13: ffffc9002428a908 R14: 0000000000000000 R15: ffff8880744eabac
FS:  0000000000000000(0000) GS:ffff88802c800000(0063) knlGS:00000000f7f29b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000200014c0 CR3: 0000000065e4d000 CR4: 0000000000352ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 kvm_vcpu_ioctl+0x574/0xea0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4106
 kvm_vcpu_compat_ioctl+0x1f4/0x3c0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4306
 __do_compat_sys_ioctl+0x255/0x2b0 fs/ioctl.c:968
 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
 __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178
 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203
 entry_SYSENTER_compat_after_hwframe+0x70/0x82
RIP: 0023:0xf7f2e579
Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000f7f295cc EFLAGS: 00000296 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 000000000000ae80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	10 06                	adc    %al,(%rsi)
   2:	03 74 b4 01          	add    0x1(%rsp,%rsi,4),%esi
   6:	10 07                	adc    %al,(%rdi)
   8:	03 74 b0 01          	add    0x1(%rax,%rsi,4),%esi
   c:	10 08                	adc    %cl,(%rax)
   e:	03 74 d8 01          	add    0x1(%rax,%rbx,8),%esi
  1e:	00 51 52             	add    %dl,0x52(%rcx)
  21:	55                   	push   %rbp
  22:	89 e5                	mov    %esp,%ebp
  24:	0f 34                	sysenter
  26:	cd 80                	int    $0x80
* 28:	5d                   	pop    %rbp <-- trapping instruction
  29:	5a                   	pop    %rdx
  2a:	59                   	pop    %rcx
  2b:	c3                   	retq
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	90                   	nop
  2f:	90                   	nop
  30:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi
  37:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi